docs: def reset(self):
          """Reset internal state
          """
  
          self.overall = {
              'Nref': 0.0,
              'Nsys': 0.0,
              'Nsubs': 0.0,
              'Ntp': 0.0,
              'Nfp': 0.0,
              'Nfn': 0.0,
          }
          self.class_wise = {}
  
          for class_label in self.event_label_list:
              self.class_wise[class_label] = {
                  'Nref': 0.0,
                  'Nsys': 0.0,
                  'Ntp': 0.0,
                  'Ntn': 0.0,
                  'Nfp': 0.0,
                  'Nfn': 0.0,
              }
  
          return self